/Engine/Source/Runtime/SlateCore/Public/Layout/BasicLayoutWidgetSlot.h
typedef ::[SlateAttributePrivate::TSlateContainedAttribute](API\Runtime\SlateCore\Types\Attributes\TSlateContainedAttribute)< [FMargin](API\Runtime\SlateCore\Layout\FMargin),::[SlateAttributePrivate::FSlateAttributeNoInvalidationReason](API\Runtime\SlateCore\Types\Attributes\FSlateAttributeNoInvalidationRea-), SlotPaddingCompareType > SlotPaddingType